extend summary dict

Author: bjlittle

pytest_mpl/kernels.py

@@ -115,6 +115,7 @@ def update_summary(self, summary):
         None
 
         """
+        # The "name" class property *must* be defined in derived child class.
         summary["kernel"] = self.name
 
 

pytest_mpl/plugin.py

@@ -735,6 +735,9 @@ def item_function_wrapper(*args, **kwargs):
                     'result_image': None,
                     'baseline_hash': None,
                     'result_hash': None,
+                    'kernel': None,
+                    'hamming_distance': None,
+                    'hamming_tolerance': None,
                 }
 
                 # What we do now depends on whether we are generating the